The ones imported by Marstar some dozen years back are still non-restricted in the FRTs. However, recent attempts to produce or import the same firearm have resulted in the RCMP declaring that the new ones would be converted autos. The RCMP lab now claims that to be a semi auto and not a converted auto, all five sides of the receiver box (top, bottom, left and right, and the trunnion) must all be new and not recycled. If they are recycled, then the gun is now considered by them to be a converted auto. Of course, the TNW guns only have a new right sideplate, which is all that is required in the US.
Despite them being the experts in firearms, they claim that as far as they have been told, all five sides of the old imports were brand new. A look at the old FRT entries for these types of guns show that they knew the receivers were made up of surplus parts. Fortunately, the regulations were changed last summer so the lab cannot make changes to an FRT that is more than 1 year old. Time will tell if that protects owners of the M1919 or not.